This iceberg-making submarine is proposed in a bid to counter the effects of global warming through "re-freezing seawater in the Arctic." The concept is put forth by Indonesian designer Faris Rajak Kotahatuhaha and the prototype has been devised in the collaborative company of Denny Lesmana Budi and Fiera Alifa. The project was submitted to an international competition for consideration and it won second place.
The iceberg-making machine will attempt to refreeze the Arctic by creating "hexagonal blocks of ice that nest together to form new ice floes." The device will do this by collecting water in a central tank. Reverse osmosis will filter some of the salt, while the turbines will blast cold air to contribute to freezing. In this time, the iceberg-making submarine would have raced the surface and delivered the ice.